Activism is, in many ways, the most important activity undertaken by social and political movements. In short, activism is the action that movements undertake in order to challenge some existing element of the social or political system and so help fulfill movements' aims. Thus, activism includes a wide range of different actions, from participating in a forum to sabotaging property. Not only does activism vary according to the type of action chosen, but also depending upon the target or targets, which could be local citizens, corporations, local or national governments, international financial institutions, the capitalist system, and so on.